Skin Biopsy

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Margins
  1. Atypical Nevus - 1-3mm surrounding area, High Risk - 3 mm.
  2. Suspected Basal Cell / Squamous Cell CA - 4-6mm surrounding

Excisional Biopsy should be performed when highly suspicious of Melanoma to better ascertain depth.

  • Recommended Surgical Margins for Melanoma Based on Breslow Depth

Breslow Depth - Margin

In situ 5 mm
≤ 2.0 mm 1 cm
> 2.0 mm 2 cm
References
AFP - Cutaneous Malignant Melanoma 2012
AFP - Shave & Punch Biopsy for Skin Lesions
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